herring

within 25 miles

Oct 9, 2026

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State of Maine

Maine Pennamaquan River Fish Counting Project

Count the number of anadromous fish using Pennamaquan fishway

Anywhere

Ongoing

Citizen Sciencemaine

Mystic River Watershed Association

Mystic River Herring Education Project

Connect students to the remarkable river herring migration.

Anywhere

Ongoing

Citizen ScienceBirdsBiologyOcean Water MarineAnimalsNature & OutdoorsEducationSocial ScienceGeographyPolicywatershedmammalsfish laddermill brookeelscormorantsstemsummer reading 2021ecosystemsdataenvironmentconnectospreyadvocacyhabitatwildlifecommunity servicemalden riverblack crowned night heronherringnatureecologyaquaticanadromousmystic lakezooplanktonmill creekeagleshorn pondreptilesvolunteerwater qualityfishsciencerivermysticmonitoringcitizen science

Scenic Hudson: Volunteer Herring and Eel Monitoring

Help biologists learn why herring and eels are declining.

New York

Ongoing

Citizen ScienceBiologyEcology & EnvironmentOcean Water MarineAnimalsNature & Outdoors

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